Display sign



July 19 1927 J. PARKlNsoN DISPLAY SIGN Filed Jan. 51. 192? Inzrsnz'uz' Jfarlrr'nsan,

Patented July 19, 1927.

UNITED STATES .PATENT oFFicE.

JAMES PARKINSON, OF T ORONTO, ON TARIO, CANADA.

DISPLAY SIGN. y

Application mea January 3 1, 1927. serial No. 164,918.

My invention relates to improvements in display signs and methods of making same and the object of the invention 1s to produce in a flat surface a raised or embossed letter 5 effect Without raising the surface of the letl is a flat metal sheet preferably formed i of aluminum or some bright similar metal in which grooves can be `made with comparative ease and 2 is a sheet of glass of similar '35 dimensions to the metal sheet adapted to be positioned upon the outer face thereof whenv the sign `is completed ready for use. The sheet of glass canbe held in position by any suitable means such as the U-shaped clips '3. TV The particular outline of the sign required is iirst lightly engraved upon the surface of the sheet of metal which of course is dull due to the rolling process'in its manufacture. A suitable graving tool is then used to deeply incise the outline of the sign into the metal, such incisions which ai'e indicated by reference numerals 4 being in the forni of a groove substantially triangular cross section as clearly illustrated in Figure 2. It has been found through experiment that the best relectory outline is obtained by forming the incisions or groove of right angle triangular cross section, the hypo-tenuse of the triangle forming the bottom of the incision, the right angle corner being positioned at the outer margin of the. outline,

rendering the sign more 7hen the cutting of the outline incisions l has been completed the surface of the sign surrounding the outline is darkened by 'any suitable means suchV as enamel so as to form a back ground in effective contrast to the letter outlined in the aforesaid groove t the bright metallic surface forming the base-of the groove serves to throw the letter surrounded therebyr into relief so as to give the effect of an embossed letter Which is produced on a out. y

I have utilized the incisions incombination With suoli Vunpolished surface to vform an eifectivecontrast Which will readily catch the eye. Furthermore by darkening one portion of the sign I have devised. a very efficient means for insuring the'pi'ominence of the display Without increasing the costl of manufacture to any appreciable extent.

It may also be pointed out that'ivhen my sign is used at night ina location such as a store Window that it gives a very beautic t: l ful effect,l particularly when all the lights in thel Window are turned olf. TheV com` paratively little light which strikes the sign from the street reflects upon the reflecting surface of the sign making the letters stand out in a `veiy'bright illuminated outline,

clearly visible than would be in a .sign which is constructed under any method hitherto devised.

What I claim as my invention is:y

fA display sign comprising a plate formed o extending perpendicularly to the face of bottom Wall extending the side Wall to the face of the sign at the opposite side of the groove and formed by cutting into the metal of the plate to outline a letter, character or figure and to expose the bright metal to contrast with the dull surface formed by the letter, character or ligure.

A JAMES PARKINSON Y bright metal having a dulled surfaceand vgrooves having side walls surface Vwhich is flush through- 'i the sign, and a V from the bottom of 

